How many of you DO NOT experience buffetting and vibration problem?

[Bighurk]

2015i Z71 with sunroof. About 8000 miles and have not had the buffeting issues or anything else. **knock on wood**


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[Blueinterceptor]

2015i suburban no sunroof

Started to hear a sound that sounds like heavy wind from back door. I guess. We hear it at about 60mph and higher

 

[LGSONE]

1400 miles with sunroof on 2015i and sounds fine. Took it out on I70 west of KC headed to Topeka, nice and flat, did 60, 70, 80 and 90 with the cruise on. Sounds fine no buffeting.

LGSONE

 

[DannyLT]

I have had my 2016 Tahoe for about a month and a half and haven't noticed any buffeting or vibration at 70+

 

[bgsntth]

I have a 2016 Z71 with about 5K miles. No vibration, no pressure changes, and the changes into V4 is invisible to me, but I do notice the slight booming when hitting potholes, speed bumps, expansion joints etc. I have crossbars with surfboard pads, 275/65-18 Nokian AT Rotiivas, and a GM\Borla Cat-back exhaust.

I can imagine the suspension booming is miserable with 22" wheels, as the Suburban does not seem to have any sound deadening - it is loud. Louder than my 2014 Accord with 235/45-18's over bumps, and like a chuckwagon compared to my wife's 2008 Range Rover. I still love my Z71 despite this uncouth characteristic.

 

[Kansas Eagle]

Had the tires replaced for vibration above 70mph....been perfect ever since.

 

[cardude2000]

Had the tires replaced for vibration above 70mph....been perfect ever since.

View attachment 58828

What was wrong with the tires?


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[Kansas Eagle]

What was wrong with the tires?


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The truck had a vibration when driven above 70 mph. Took it in and they said that 3 of the 4 tires were so bad, they could not be used. 3 tires replaced under warranty. Got the truck back and problem solved 100%

 

[ktpinnacle]

The truck had a vibration when driven above 70 mph. Took it in and they said that 3 of the 4 tires were so bad, they could not be used. 3 tires replaced under warranty. Got the truck back and problem solved 100%

Well, THAT'S not a confidence-builder - brand new tires with a 75% failure rate? What brand?

 

[Blueinterceptor]

I remember reading somewhere that before the tires are mounted on the rims, many of them are rejected for being out of round. These were for all tires not just the contis.

I always thought that's why the car always ran so good when new. Perfect balance and alignment.

 

[Kansas Eagle]

Well, THAT'S not a confidence-builder - brand new tires with a 75% failure rate? What brand?

Bridgestone Duelers. The ones they replaced them (also Bridgestone's) are fine however. I had this happen on another GM, I had a new 2008 Cadillac CTS that had all 4 Michelin tires replaced for the same thing...only in that case, the replacements were just as crappy. I ended up trashing the brand new Michelins and put Pirelli P-Zero's on the Caddy....ran perfect.

 

[MVR 155]

Not all that uncommon to see tires that will not balance proper due to being "out of round". I've had a set of Continentals that had this issue and also a set of Goodyears. The problem tires were replaced without issue.

 

[Blueinterceptor]

To those with the buffering sounds.

First try taking off the cross rail on the roof racks. I was getting a whistle from the back that is gone. The cross members attach to the roof racks via the 2 screws on each side, what most people don't know is the crossmember attaches to that bracket by 2 more screws. Mine were loose causing the crossmember to pitch ever so slightly.
I also noticed a small lack of symmetry on the left side of the rear hatches weather stripping. Near the latch. I had them push that under the trim. Now I have just tire noise and some wind noise from the large windshield lumbering through the air.

It's a lot less noise than before.

 

[FogDucker]

Not all that uncommon to see tires that will not balance proper due to being "out of round". I've had a set of Continentals that had this issue and also a set of Goodyears. The problem tires were replaced without issue.

I've had 6 Continentals replaced so far with less than 11,000 miles on the odometer. In reading reviews, there seem to be many reports of vibrations with the LX20s.

 

[Redjet 10]

I have a 15 Denali with the 6.2. It was the owner of the Dealerships Demo. It has the vibration. It starts at 1100 hundred rpm and goes on till 1250. If i would go to manual shifting at the same speeds the vibration would go away. I went to the dealer and had it checked out. I was told that there was a service bulletin on this and the service manager said that it was the torque converter issue. On the drive home after it was fixed, not only was it still there i was worse. Now it starts at 1100 rpm and goes to 1600 rpm. The vibration is about the frequency of a bad ujoint. The rpm also fluctuates about 200 rpm in this area. I drive the same route daily for 6 miles that puts in that rpm range, the vibration is always there.
Bringing it back to the dealer tomorrow.
I have had many cars and trucks. Alot of them have been heavily modified and these were new cars of the lot. None have ever had this bad of a vibration.

 

[YukonBradley]

I just picked up a 2016 Denali 2WD base configuration. I did not experience any buffeting. I did experience minor buffeting on another similar Denali at a different dealership.

 

[blackout07]

2105 Tahoe with sunroof. 13k miles with no pressure/buffeting. FWIW, I've driven/ridden in countless PPV 15 Tahoes with none of those issues.

 

[1badtahoe24]

has anyone had any issue with aftermarket rims and tires?

 

[Weber Dude]

No issues here in my 2016 Yukon XL 4x4 w/sunroof, 3:42 gears, 20" wheels. I knew about all these issues before I purchased. There was no other option for my family. Just finished up a 950mile road trip with no issues. The only thing I don't like is the v4 mode at low speed; at freeway speed it's fine. So, if I know I'm going to be driving around in town, lower speeds, I drive in M4 or M5.

 

[cardude2000]

No issues here in my 2016 Yukon XL 4x4 w/sunroof, 3:42 gears, 20" wheels. I knew about all these issues before I purchased. There was no other option for my family. Just finished up a 950mile road trip with no issues. The only thing I don't like is the v4 mode at low speed; at freeway speed it's fine. So, if I know I'm going to be driving around in town, lower speeds, I drive in M4 or M5.

What's the issue with the v4 mode?
And above 75mph you have no vibration?


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